Emergency 24/7 Crisis Help Emergency Help Here are options when you or someone you care about is experiencing a mental health crisis: Call 911 if the situation is a life-threatening emergency. Visit our Behavioral Health Crisis Center at 1758 County Services Parkway in Marietta: open 24 hours a day, 7 days a week. For non-crisis situations, Cobb County Community Services Board’s Outpatient Service, located at 1650 County Services Parkway in Marietta, is open Monday-Friday from 8 a.m.- 3 p.m. for walk in assessments.